Tuesday

July 29, 2014

July 29, 2014

Posted by **Sydney** on Wednesday, September 14, 2011 at 9:52pm.

(a) Find the maximum height the second child reaches.

(b) What is the initial speed of the first child?

(c) How long was the first child in the air?

- Physics -
**Brianna**, Thursday, September 29, 2011 at 8:16pmYo= 0m

h=?

A=g=9.8m/s^2

Child A:

Voa= ?

Ya= 1.6h

Ta= ?

Child B:

Vob= 5.2 m/s

Yb= h

a) Vob^2 = 2AYb

Yb= Vob/2A

h= (5.2 m/s)^2/(2(9.8m/s^2))

h= 1.37m

b) Voa=?

Voa^2=2AYa

Voa= sqrt(2AYa)

Voa= sqrt(2(9.8m/s^2)(1.6(1.37)))

Voa= 6.55m/s

c) sorry but i can't figure out how to do c

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